EP1591666B1 - Ventilateur - Google Patents

Ventilateur Download PDF

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Publication number
EP1591666B1
EP1591666B1 EP05006157A EP05006157A EP1591666B1 EP 1591666 B1 EP1591666 B1 EP 1591666B1 EP 05006157 A EP05006157 A EP 05006157A EP 05006157 A EP05006157 A EP 05006157A EP 1591666 B1 EP1591666 B1 EP 1591666B1
Authority
EP
European Patent Office
Prior art keywords
region
conveyor
interrupter
section
blower
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05006157A
Other languages
German (de)
English (en)
Other versions
EP1591666A1 (fr
Inventor
Michael Haefner
Hermann Eppler
Arne Fischer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102004025104A external-priority patent/DE102004025104A1/de
Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP1591666A1 publication Critical patent/EP1591666A1/fr
Application granted granted Critical
Publication of EP1591666B1 publication Critical patent/EP1591666B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D23/00—Other rotary non-positive-displacement pumps
    • F04D23/008—Regenerative pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps

Definitions

  • the present invention relates to a blower, in particular combustion air blower for a vehicle heater, comprising a blower housing, a conveyor channel formed in the blower housing, annularly extending about an axis of rotation and open on one axial side of the blower housing, a delivery wheel which covers the delivery channel on the blower housing and is rotatably supported about the rotation axis and has a plurality of circumferentially successive conveying blades which move upon rotation of the conveying wheel in a direction of movement over the conveying channel, an inlet region for the entry of medium to be conveyed into the conveying channel, an outlet region for the outlet of along the Delivery channel promoted medium from the conveyor channel, as well as in the direction of movement of the conveyor blades following the exit area and the inlet area before an interruption area in which the delivery channel in the circumference direction is interrupted, according to the preamble of claim 1.
  • blowers also known as side channel blowers, are used to convey the required combustion air into the area of a combustion chamber in vehicle heaters, such as those used as auxiliary heaters or auxiliary heaters. Due to the rotation of the delivery wheel, a pressure is built up between the inlet region and the outlet region. In the exit region, the medium to be conveyed, for example the air, then has an increased pressure and exits there to the system area to be supplied with the medium. In principle, there is the problem that in the exit region, the volumes delimited between two circumferentially successive delivery blades convey under increased pressure medium to be conveyed into the section located above the interruption region. When sweeping the entry area facing the end of the interruption area occurs in the relaxation Range of these volumes.
  • the initially trapped under pressure medium expands in the inlet area, which also leads to perceptible noise in addition to a deterioration of the delivery characteristics.
  • the swirling occurring in the area of the upstream, that is to say the discharge area facing, end of the interruption area when the interruption area is scanned with the conveying blades and the turbulences correspondingly occurring at the downstream end area during the expansion process lead to the development of noise.
  • a blower according to the preamble of claim 1 is known.
  • the breaker area is designed so that a connection channel arrangement connecting the inlet area with the outlet area can be changed in its flow cross section by the use of actuators.
  • a blower in particular combustion air blower for a vehicle heater, according to claim 1.
  • This comprises a blower housing, one in the blower housing a conveying channel which extends around an axis of rotation and which is open on one axial side of the fan housing, a delivery wheel which on the fan housing covers the delivery channel and is rotatable about the axis of rotation and has a plurality of circumferentially successive delivery blades which rotate upon rotation of the conveyor Conveyor wheel to move in a direction of movement above the conveyor channel, an inlet area for the entry of medium to be conveyed, z. B.
  • connection channel arrangement By providing the connection channel arrangement, a direct fluidic connection between the outlet region and the inlet region is created.
  • pressure equalization can be provided which significantly reduces the problems associated with the spontaneous expansion of the initially pressurized volumes.
  • connection channel arrangement further leads to a flow connection between the outlet region and the inlet region, which of course results in a reduction in the delivery rate.
  • the connection channel arrangement can be specified, how large the "leakage" between the exit region and inlet area, so that for adapting to the desired operating conditions, for example, a predetermined operating speed for the feed wheel defined by selecting the geometry or the flow conditions of the connecting channel arrangement and the flow rate can be adjusted.
  • the connection channel arrangement has the effect of, for example, the inlet region or the outlet region upstream throttle, which reduces the delivery rate from the house.
  • a particularly efficient reduction of noise and turbulence can be provided in that the interruption region has a breaker top which is located in the region of the axial side of the blower housing and faces the conveying wheel, and in that the connecting duct arrangement is designed to extend in the break region near the breaker top side.
  • the breaker top side or the component providing it can thus be flowed around on two sides, namely once in the region of the connecting channel arrangement and once in the region of the volumes enclosed between the conveying vanes. This not only mitigates the expansion shocks but also the turbulence created at the end regions of the interruption area.
  • the interruption area comprises a cover plate which provides the breaker top side and covers the connection channel arrangement.
  • a flow cross section of the connecting channel arrangement decreases in the direction of the inlet region.
  • the rejuvenation towards the entrance area provides an acceleration of the flow.
  • the interruption region has an interrupting top side located in the region of the axial side of the fan housing and facing the conveying wheel, and that the connecting channel arrangement has at least one recess open towards the delivery wheel on the breaker upper side, a plurality of depressions preferably being groove-like on the breaker top side Structure forms.
  • Such a depression structure which extends virtually over the entire interruption area, also establishes a connection between the exit region and the entry region and can be easily produced, for example, by machining, without having to use additional components.
  • the Fig. 1-3 show a first embodiment of a blower 10 according to the invention.
  • This blower 10 comprises a blower housing 12, which has a about an axis of rotation A ring-like and on one axial side 14 of the blower housing 12 open conveyor channel 16.
  • This conveyor channel 16 has, as in Fig. 1 shown in cross-section on a semi-circular geometry.
  • the conveying wheel 18 In its region covering the conveying channel 16, the conveying wheel 18 carries a plurality of conveying blades 20, which are arranged successively in the circumferential direction about the axis of rotation A and are carried in a region 22 of the conveying wheel 18 which, like the conveying channel 16, basically has a semicircular cross-sectional geometry ,
  • the feed wheel 18 is driven by a drive motor, not shown, for example, electric motor for rotation about the axis of rotation A, so that the conveying blades 20, as in Fig. 3 indicated in a direction of movement B sweep the conveyor channel 14.
  • the medium to be delivered ie, for example, air
  • the medium to be delivered is introduced into the delivery channel 16 through an inlet opening 26 or sucked in.
  • This medium to be conveyed is then moved along the conveying channel 16 and can then leave the conveying channel 16 in an outlet region 28 via an outlet opening 30 under elevated pressure.
  • an interruption region 32 Between the inlet region 24 and the outlet region 28 there is an interruption region 32. This interrupts the otherwise annular conveying channel 16 and ensures that the air delivered into the outlet region 28 and now under increased pressure substantially also exits therefrom from the conveying channel 16.
  • 18 volumes V are formed between the circumferentially successive conveyor blades 20 in the feed wheel, which are initially included when sweeping the interruption area 22. If these volumes V reach the inlet-side end 34 of the interruption area 32 during the movement of the feed wheel 18, the pressurized air can relax in the direction of the inlet area 34.
  • connection channel arrangement 38 is provided in the blower 10 according to the invention. This bridges the interruption region 32 and thus establishes a direct flow connection between the outlet region 28 and the inlet region 24.
  • the connection channel arrangement 38 can be generated, for example, in that the interruption region 32 is basically subdivided into two parts or regions 40, 42.
  • the region 40 forms the lower part of the interruption region 32 and thus closes off the substantial cross-sectional region of the conveying channel 14 between the inlet region 24 and the outlet region 28.
  • the upper part 42 may be provided by a cover plate forming a breaker top 44, which in turn may terminate flush with the axial side 14 of the blower housing 12.
  • This cover plate 44 may be replaced by a plurality of Stem portions 46 may be supported relative to the region 40.
  • the axial gap between the two regions or parts 40, 42 then forms the connecting channel arrangement 38, through which the conveyed medium or a part thereof can pass after reaching the exit region at a small distance from the upper surface 44 of the breaker.
  • This part of the conveyed medium thereby moves substantially parallel to that part of the conveyed medium which, when reaching the exit region 28, is located in a respective volume V.
  • the geometry or the cross-section of the connecting channel arrangement 38 can be chosen so that, taking into account the desired performance of the blower 10, the occurrence of turbulence and relaxation shocks can be prevented as much as possible.
  • connection channel arrangement 38 can be optimized by being comparatively close to the interruption top side 44. That is, in any case it should be ensured that this connection channel arrangement 38 is closer to the upper side of the breaker than at the bottom region, that is, the region of the conveying channel 14 which is farthest from the axial side 14.
  • This can be easily realized by providing a plate-like member or portion 42, as previously explained.
  • the ratio of the axial height b of the connecting channel arrangement 38 to the axial thickness a of the region 42 can also be selected such that the desired flow conditions are achieved.
  • the size a is in the range of less than 3 mm, preferably less than 1 mm, advantageously the size b can be in the range of about 2 mm.
  • FIG Fig. 4 An alternative embodiment of the blower 10 according to the invention is shown in FIG Fig. 4 shown.
  • the basic structure of the blower 10 corresponds to the previously described.
  • the interruption region 32 is configured in such a way that a plurality of groove-like depressions 46 which are open toward the delivery wheel 18 are formed on the interrupter top side 44, which lies opposite the delivery wheel 18 at a small axial distance.
  • these depressions 46 extend circumferentially completely over the interruption region 32, thus providing the connection channel assembly 38 which forms a flow connection between the exit region 28 and the inlet region 24 of the delivery channel 16.
  • This embodiment variant has the advantage that it is relatively easy to produce.
  • the groove-like depressions 46 for example, by milling or the like.
  • a groove-like or rib-like structuring can be created by just a plurality of such depressions 46 extending next to each other, so that in principle almost the entire breaker top 44 can be used.
  • the in Fig. 4 Fan shown are also constructed so that these depressions 46 are not completely designed from the outlet area to the inlet area on the breaker top 44 continuously. Rather, the circumferential beginning of this depression or depressions 46 may be at a distance from the exit region 28 or end region 36 of the interruption region 32.
  • these depressions 46 then extend in the direction of the inlet region 24 and the end 34 of the interruption region 32 and are open there to the inlet region 24.
  • a channel arrangement is provided which does not provide a direct connection between the exit region 28 and the entry region 24 but establishes a connection between the volumes V and the entry region 24 which are above the interrupt region 36 and thus enclosed
  • the gaseous medium under pressure in such a volume via this channel arrangement, formed by one or more depressions 46, relaxes to an extent defined by the geometry of the depressions 46. The occurrence of relaxation shocks can thus be significantly reduced or 46 largely avoided with appropriate dimensioning of the depressions.
  • Fig. 5 a modification of the previously described embodiment is shown. It can be seen here the fan housing 12 in a perspective view, viewed from the axial side 14 forth, which is otherwise covered by the conveyor wheel, not shown.
  • a single recess 46 extending completely in the circumferential direction is now provided. This depression 46 thus establishes a direct connection between the outlet region 28 and the inlet region 24.
  • the recess 64 since it is open to the axial side 14, in the manufacture of the blower housing 12 by machining, ie, for example, milling or the like, are prepared with. Also with one such single, but in cross-section larger sized depression 46, the effects described above can be achieved.
  • the cross-sectional dimension of such a depression 46 may, for example, be chosen so that it has a depth of 2 mm and a width of about 5 mm, so that a total cross-sectional area in the range of 10 mm 2 to 12 mm 2 can be achieved.
  • the dimensioning of the depression 46 or of the channel which produces a connection between the outlet region 28 and the inlet region 24 essentially depend on the area of use.
  • the flow cross-sectional area of the channel essentially influences the leakage between the outlet region 28 and the inlet region 24, so that at a given operating point, for example predetermined rotational speed, without influencing further system regions of such a fan, in an extremely simple manner the delivery rate is adjustable.
  • the delivery rate can be set or adjusted as desired by suitably adapting the "leakage" between the outlet region and the inlet region . be specified.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (5)

  1. Ventilateur, en particulier ventilateur destiné à l'air de combustion pour un appareil de chauffage de véhicule, comprenant :
    - un boîtier de ventilateur (12),
    - un canal de transport (16) réalisé dans le boîtier de ventilateur (12), s'étendant sous forme annulaire autour d'un axe de rotation (A), et ouvert au niveau d'un côté axial (14) du boîtier de ventilateur (12),
    - un rotor (18) qui est porté sur le boîtier de ventilateur (12) en rotation autour de l'axe de rotation (A) et qui recouvre le canal de transport (16) et une pluralité d'aubes de transport (20) qui se suivent les unes les autres en direction périphérique et qui se déplacent, lors d'une rotation du rotor (18), dans une direction de déplacement au-dessus du canal de transport (16),
    - une zone d'entrée (24) pour l'entrée du milieu à transporter dans le canal de transport (16),
    - une zone de sortie (28) pour la sortie du milieu transporté le long du canal de transport (16) hors de celui-ci,
    - une zone d'interruption (32) qui, dans la direction de déplacement des aubes de transport (20), fait suite à la zone de sortie (28) et précède la zone d'entrée (24), dans laquelle le canal de transport (16) est interrompu en direction périphérique,
    - un agencement formant canal de liaison (38) qui établit, au-delà de la zone d'interruption (32), une liaison entre la zone de sortie (28) et la zone d'entrée (24),
    caractérisé en ce qu'une section d'écoulement de l'agencement formant canal de liaison (38) diminue en direction de la zone d'entrée (24).
  2. Ventilateur selon la revendication 1,
    caractérisé en ce que la zone d'interruption (32) comprend une face supérieure d'interruption (44), située dans la zone du côté axial (14) du boîtier de ventilateur (12) et tournée vers le rotor (18), et en ce que l'agencement formant canal de liaison (38) est réalisé de manière à s'étendre à proximité de la face supérieure d'interruption (44) dans la zone d'interruption (32).
  3. Ventilateur selon la revendication 2,
    caractérisé en ce que la zone d'interruption (32) comprend une plaque de couverture (42) qui présente la face supérieure d'interruption (44) et qui recouvre l'agencement formant canal de liaison (38).
  4. Ventilateur selon l'une des revendications 1 à 3,
    caractérisé en ce que la zone d'interruption (32) comprend une face supérieure d'interruption (44) située dans la zone du côté axial (14) du boîtier de ventilateur (12) et tournée vers le rotor (18), et en ce que l'agencement formant canal de liaison (38) présente, au niveau de la face supérieure d'interruption (44), au moins un renfoncement (46) ouvert vers le rotor (18).
  5. Ventilateur selon la revendication 4,
    caractérisé en ce que, au niveau de la face supérieure d'interruption (44), une pluralité de renfoncements (46) forment une structure rainurée.
EP05006157A 2004-04-30 2005-03-21 Ventilateur Not-in-force EP1591666B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102004021251 2004-04-30
DE102004021251 2004-04-30
DE102004025104 2004-05-21
DE102004025104A DE102004025104A1 (de) 2004-05-21 2004-05-21 Gebläse, insbesondere Verbrennungsluftgebläse für ein Fahrzeugheizgerät

Publications (2)

Publication Number Publication Date
EP1591666A1 EP1591666A1 (fr) 2005-11-02
EP1591666B1 true EP1591666B1 (fr) 2008-12-03

Family

ID=34934409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05006157A Not-in-force EP1591666B1 (fr) 2004-04-30 2005-03-21 Ventilateur

Country Status (2)

Country Link
EP (1) EP1591666B1 (fr)
DE (1) DE502005006114D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018203177A1 (de) * 2018-03-02 2019-09-05 Robert Bosch Gmbh Seitenkanalverdichter für ein Brennstoffzellensystem zur Förderung und/oder Verdichtung von einem gasförmigen Medium
DE102018222243A1 (de) * 2018-12-19 2020-06-25 Robert Bosch Gmbh Seitenkanalverdichter für ein Brennstoffzellensystem zur Förderung und/oder Verdichtung von einem gasförmigen Medium
DE102018222230A1 (de) * 2018-12-19 2020-06-25 Robert Bosch Gmbh Seitenkanalverdichter für ein Brennstoffzellensystem zur Förderung und/oder Verdichtung eines gasförmigen Medium

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9420591U1 (de) * 1994-12-23 1995-02-16 Fa. J. Eberspächer, 73730 Esslingen Seitenkanalgebläse
DE19708953A1 (de) * 1997-03-05 1998-09-17 Busch Gmbh K Seitenkanalverdichter mit modifiziertem Unterbrecher
DE19849836C1 (de) * 1998-10-29 1999-10-21 Webasto Thermosysteme Gmbh Ringkanalgebläse und Verfahren zur Montage eines solchen

Also Published As

Publication number Publication date
EP1591666A1 (fr) 2005-11-02
DE502005006114D1 (de) 2009-01-15

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